Drupal 8.x

Hello

I am trying to implement the Media Thumbnail Module for mp4 video files.

When I use the  Refresh function tab in

Home / Administration / Configuration / Media / Media Thumbnails settings ,

I get the error below

I am looking to move my Flickr account onto a personal website so I can let my Flickr expire.

I have downloaded the contents of my Flickr and want to duplicate the data and structure in the json files (Title, Description, Tags, Albums, etc.) in a new site. The modules I have found are just meant to integrate with existing Flickr accounts.

I hope this isn't too general a question but does anyone know of an existing solution or a module that would get me started?

I am running Drupal locally and still figuring stuff out and would be grateful for any direction.

Hey, I am new to drupal.

I created a drupal webpage. In the webpage I want to include cutom php code, doing the following.

(I want to insert an image, but for some reason, that is not possible in the forum)

On the right hand site, you should see a mindmap, containing several link. Normaly I would use <iframe> for this. The right hand site should output the results from a sqlite database query.

How can I do that?

Thanks a lot in advance!

The tick box  "View the administration theme" is not available on the drupal 9.01 permissions page. I've looked at a couple of instances on my localhost dev and can't find it, searched a couple of databases and can't find it.
Am I missing something or is it not available?

 Step 3 of 11.8 says: 

Copy all of the files from the web root of your live site to the web root of your development site.

If a site is created using